[TenTec] Herc II idling collector current adjustment

[Phil Chambley, Sr.]

Ken....

With the amp turned on its side, and with the front panel at the left,
looking at the amplifier boards:

Bias board pots
R14 controls upper left amp
R10  controls upper right
R2  for lower left
R6 for lower right

Phil
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----- Original Message ----- 
From: "Ken Brown" <ken.d.brown at verizon.net>
To: "Discussion of Ten-Tec Equipment" <tentec at contesting.com>
Sent: Monday, February 21, 2005 3:40 PM
Subject: [TenTec] Herc II idling collector current adjustment


> Thanks to all for the information. I have decided to open up the
> Hercules, check the individual power supply voltages (and hopefully not
> have to get into the 9420 to adjust them), measure the individual PA
> module idling collector currents, and adjust the individual bias pots to
> get about 500 mA on each. So looking in my Hercules II manual, on page
> 2-6 Figure 2-3 Top View, I see that it is going to be easy. Just take
> the top cover off to get to the power distribution board.......Too bad
> that the pictures in the manual are mislabled. The "Top View" is
> actually the bottom view.
>
> DE N6KB
>
>
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